Rainbow ocean on Ubuntu 16.04

[EvoPulseGaming]

Imported from UE4-OceanProject/OceanProject#87

UE version: 4.18.3
OceanProject branch: 4.18
OS: Ubuntu 16.04

Hi guys,

This is an amazing project and would be perfect for my application. However, on Ubuntu 16.04, I am getting very strange, rainbow-like textures for the ocean:

screenshot from 2018-09-28 12-19-23

I realize related issues have been brought up before, but none of them seem to be exactly like my issue. I was wondering if there is any way I could fix this without having to wait for the OpenGL compatible version of the environment.

My OpenGL version should be 4.5.0, judging by the output of glxinfo:

$ glxinfo | grep 'OpenGL version'
OpenGL version string: 4.5.0 NVIDIA 384.130